A 200-Gb/s 70-GHz-bandwidth 2:1 analog multiplexer in 130-nm SiGe BiCMOS process

Sijie Fan; Zedong Wang; Hua Xu; Hengyu Xu; Wenxiang Zhen; Xuqiang Zheng

doi:10.1587/elex.21.20240099

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A 200-Gb/s 70-GHz-bandwidth 2:1 analog multiplexer in 130-nm SiGe BiCMOS process

Sijie Fan, Zedong Wang, Hua Xu, Hengyu Xu, Wenxiang Zhen, Xuqiang Zheng

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Keywords: analog multiplexer, ultra-high speed, SiGe BiCMOS, optical communication system

JOURNAL FREE ACCESS

2024 Volume 21 Issue 15 Pages 20240099

DOI https://doi.org/10.1587/elex.21.20240099

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Abstract

This paper presents a 2:1 analog multiplexer (AMUX) using IHP’s 130-nm SiGe BiCMOS process. The proposed AMUX expands the analog bandwidth (BW) of CMOS-based DACs by introducing interleaving sampling technique, thus improving the data rate of single lane in modern optical communication systems. Meanwhile, a detailed analysis of process selection which particularly focuses on material and device considerations is adopted, and a principle of the BW expansion is comprehensively discussed. The AMUX exhibits a BW >70GHz, achieving a data rate of 200Gb/s under PAM-4 modulation.

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